Really?
It's sort of basic training! That by itself is Chris's point. Ueshiba actually quoted the path to do it.
Oh well...shrug.
Dan

Dear Dan,
With all due respect since I did not ask Tamura Sensei what training he did or didnt do to acquire this skill one cannot presume that the basic training you indicate is necessarily the same method as Tamura Sensei used.It may well be the same but then again it may not.Oh well -shrug??
Cheers, Joe